Automatic cylinder-cock



.l. LCA'R'MICHAEL.

AUTOMATIC CYLINDER COCK.

APPLICATION FILED JAN-28,1916- I 1,395,796. Patented Nov. 1, 1921.

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JAMES J. oAnMIcnAEL, or RIDG-WAY, COLORADO.

AUTOMATIC CYLINDER-COCK.

To all whom it may concern:

Beit known that I, JAMES J. CARMIOHAEL, a citizen of the United States, residing at Ridgway, in the county of Ouray and State,

and to provide an automatic cylinder cock controlled by the steam pressure in thecylinder and adapted toprovide an open cylinder cock in advancefof the piston head at all times whereby water is conveyed away from the cylinder and is prevented from entering the smoke box and thestack' or causing the, breaking of packingring and cylinder heads. A further object of the invention is to provide an automatic cylinder cock of this character which will enable the discharged water and steam to be conveyed either to a point centrally between the rails at any point beneath the engine or to the ash pan so that the steam may pass upward through the grate and fiues to. the stack.

A further object of the invention is to provide automatic cylinder cocks of this character capable of ready adjustment to regulate the valve travel and adapted to be operated by a relatively small valve travel so that there will be comparatively little wear on the valve of the automatic cylinder cock.

With these and other objects in view the invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings and pointed out in th claims hereto appended, it being understood that various changes'in the form, proportion and minor details of construction may be resorted to without departing from the spirit or-sacrificing any of the advantages of the invention.

In the drawing I Figure 1 is a longitudinal sectional view of a cylinder provided with automatic cylinder cocks constructed in accordance with this invention,

Fig. 2 is a detail view of the pipes for Specification of Letters Patent.

Patented Nov. 1, 19-21.

Application filed. January 28, 1916. Serial No. 74,909.

conveying away the discharge water and steam,

Fig. 8 is a detail view showing an adjust ment forregulating the valve travel of the cylinder cock.

Like numerals of reference designate corresponding parts in the several figures of the drawing.

' In the accompanying drawing in which is illustrated the preferred embodiment of the invention, 1 designates a locomotive cylinder of the usual construction having a steam chest 2 at the top for a slide valve 3 which controls the admission and exhaust of steam to and from thecylinder 1 in the usual manner through ports 1 and 5 andwhile an inside slide valve is shown an outside or piston valve may of course be employed.

The cylinderis equipped at the bottom with automatic cylinder cocks consisting of suitable casings 7 connected at the .top to and depending from the bottom of the cylinder lat openings or ports 8 thereof. The casings of the automatic cylinder cocks are provided with horizontally alined seats 9 for check valves 10 mounted on valve stems 11 and 12 which are adjustably connected at their ends at a point intermediate of the ends of the cylinder. Any suitable means may of course be employed for adjustably connecting the valve stems and in the accompanying drawing is shown one form of connection in which one of the valve stems is provided with a tubular portion 12 interiorly threaded to receive a threaded portion 11 of the other valve stem, which is adapted to be screwed into and out of the tubular portion 12 and which is locked in its adjustment by a nut 13 mounted on the threaded portion 11 and engaging the adjacent end of the tubular portion 12. The casings of the cylinder cocks are connected at the bottom or lower end with a pipe 15 having a branch 16 extending inwardly transversely of the locomotive to a point between the rails so as to discharge steam thereat to prevent the discharged steam from obscuring train men and signals and frightening horses and the like. The branch pipe 16 may lead back to the ash pan so that the steam will pass upward through the grate and through the fines to the smoke stack. When steam is admitted to one end of thecylinder for moving the piston head 17 to the other end of thecylinder the steam pressure. acting on the check valve of the cylinder cock at the end at which the steam is admitted will close such check valve and automatically open the other check valve through the action of the valve stems whlch when moved in one direction opens one of the check valves and closes the other and when moved in the opposite direction reverses the position of the check valves. The check valves of the cylinder cocks inpractice' are designed to have three-sixteenths of an inch travel so that there will be comparatively little wear on the valves owing 'casin s havin valve seats therein in close proximity to said cylinder and packing glands located at their inner sides, valves located-in the casing for engaging said valve seats and having stems passing through the j, glands and adjustably connected, and a discharge pipe connected to said casings.

2. A cylinder cock including a pair of vertically arranged casings having their upper ends connected directly to the under side of a steam cylinder adjacent the ends thereof and provided intermediate their ends with .within the casings, stems carried by the Valves and extending laterally beyond the casings in the direction of each other, means adjustably connecting the valve stems together and located exteriorly of said casings, and a drain pipe located beyond said stems and means and connected to the lower ends of the casings.

3. A cylinder cock including a pair of vertically arranged casings having their upper ends threaded directly into the under side of a steam cylinder adjacent the ends thereof and provided intermediate their ends with vertical valve seats facing each other, valves within the casings, stems carried by the valves and extending laterally from the casings in the direction of each other, means located externally of the casings adjustably connecting the valve stems to permit the stroke of the valves to be increased or decreased, to permit both'valves to be moved onto their seats and turned with respect thereto, and a drain pipe located beyond said stems and means and connected to the lower ends of the casings.

In testimony whereof I afii i my signature in presence of two witnesses.

JAMEs J. CARMIOHAEL."

- lVitnessesz A. E. WALTHER, W. M. GARMIoHAnL. 

